WO2011069385A1 - 一种动态选择业务承载网络的方法及装置 - Google Patents

一种动态选择业务承载网络的方法及装置 Download PDF

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Publication number
WO2011069385A1
WO2011069385A1 PCT/CN2010/077417 CN2010077417W WO2011069385A1 WO 2011069385 A1 WO2011069385 A1 WO 2011069385A1 CN 2010077417 W CN2010077417 W CN 2010077417W WO 2011069385 A1 WO2011069385 A1 WO 2011069385A1
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service bearer
network
bearer network
signaling
message
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PCT/CN2010/077417
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English (en)
French (fr)
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李炜
王波
李原
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中兴通讯股份有限公司
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Publication of WO2011069385A1 publication Critical patent/WO2011069385A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/17Selecting a data network PoA [Point of Attachment]

Definitions

  • the present invention relates to a method and apparatus for dynamically selecting a service bearer network for a call by a specific condition on an MG (Media Gateway) device under an NGN (Next Generation Network) architecture.
  • MG Media Gateway
  • NGN Next Generation Network
  • PSTN Public Switched Telephone Network
  • TDM Time Division Multiplexing
  • circuit switching as the information exchange
  • telephone service as the main service.
  • PSTN also provides some simple data services such as fax.
  • NGN is based on SS (Soft Switch) and provides a comprehensive open network architecture based on packet technology including voice, data, video and multimedia services.
  • NGN is the product of PTSN voice network and IP (Internet Protocol)-based packet network convergence, which makes it possible to integrate voice, video, data and other services on a new generation network.
  • NGN can provide a variety of services including voice, data, and multimedia on the current network. It can also introduce low-cost IP phones that are currently used for long-distance calls into local calls, greatly reducing the cost and price of local calls.
  • the MG receives the signaling from the user side and forwards it through the IP network.
  • the existing methods for solving such problems in the NGN architecture include the SS disaster recovery mode, ISUP (Integrated Services Digital Network User Part), but these methods are established between the SS and the MG.
  • ISUP Integrated Services Digital Network User Part
  • the IP network has a large congestion, it has seriously affected the voice quality and the call, but the letter Without interruption, the above means will not work.
  • NGN has been commercialized on a large scale, there are still a large number of PSTN devices in the existing network, and it is necessary to make better use of these existing devices. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a method and device for dynamically selecting a service bearer network, and to extend the existing NGN gateway model.
  • the signaling from the user side can be forwarded through the PSTN in addition to being forwarded in the IP network.
  • the present invention provides a method for dynamically selecting a service bearer network to improve voice quality, and the method includes:
  • the service bearer quality of the monitored preferred service bearer network satisfies the condition of the handover service bearer network, and according to the judgment result, a service bearer network is selected for use. Transmitting traffic related to the signaling message.
  • steps of the preset preferred service bearer network and the condition for switching the service bearer network include:
  • the specific parameters of the service bearer quality are configured, and the service bearer network switches from the preferred service bearer network to the low priority network when the condition of the specific parameter is met.
  • the method further includes:
  • the network selected according to the first message in the call is used instead of being reselected.
  • the determining whether the service bearer quality of the preferred service bearer network meets the condition of the handover service bearer network, and selecting a service bearer network according to the judgment result For transmitting a service related to the signaling message, including:
  • the preset preferred service bearer network is selected to transmit the service related to the signaling message.
  • the step of selecting a service bearer network for transmitting the service related to the signaling message according to the judgment result further includes:
  • the low priority network is selected to transmit the service related to the signaling message.
  • the present invention further provides a device for dynamically selecting a service bearer network to improve voice quality, which is disposed on a media gateway, and includes: a configuration module, a network monitoring module, a network interface module, and a signaling module; ,
  • a configuration module configured to preset a condition of a preferred service bearer network and a service bearer network
  • a network monitoring module configured to monitor a service bearer quality of the preferred service bearer network in real time
  • a network interface module configured to receive a message from the user side
  • the signaling module is configured to: when determining that the signaling message is the first message in a call, determining whether the service bearer quality of the monitored preferred service bearer network meets the handover service bearer The condition of the network, according to the judgment result, selects a service bearer network for transmitting the service related to the signaling message.
  • the configuration module is configured to preset one of the IP network and the PSTN as the preferred service bearer network, and the other one is set as the low priority network; When the conditions of the specific parameters are met, the service bearer network switches from the preferred service bearer network to the low priority network.
  • the signaling module is configured to: when determining that the signaling message is not the first message in a call, use a network selected according to the first message in the call, and no longer New choice.
  • the signaling module is configured to: when the current service bearer quality of the preferred service bearer network does not reach the condition of the handover service bearer network, select the preset preferred service bearer network for transmission.
  • the service related to the signaling message when the result of the determination is that the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, the low priority network is selected to transmit the service related to the signaling message. .
  • the device further includes a service control module, configured to receive a signaling message sent by the signaling module when the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, and the number in the signaling message Performing an analysis to obtain the destination office direction of the information message, and sending the destination office direction to the signaling module;
  • a service control module configured to receive a signaling message sent by the signaling module when the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, and the number in the signaling message Performing an analysis to obtain the destination office direction of the information message, and sending the destination office direction to the signaling module;
  • the signaling module is further configured to construct narrowband signaling according to the destination office direction, and send the narrowband signaling through the low priority network.
  • the present invention extends the signaling forwarding capability from the user side on the MG, dynamically monitors the service bearer quality of the service bearer network, and dynamically selects the service bearer network instead of using the IP network or the PSTN alone. A certain network, thereby achieving the purpose of improving service quality and business success rate.
  • FIG. 1 is a flowchart of a method for dynamically selecting a service bearer network to improve voice quality according to an embodiment of the present invention.
  • FIG. 2 is a structural diagram of an apparatus for dynamically selecting a service bearer network to improve voice quality according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a method for dynamically selecting a service bearer network to improve voice quality according to an application example of the present invention. detailed description
  • the main idea of the present invention is to dynamically select whether to use the PSTN outgoing call or the IP network outgoing call according to the current actual situation of the service bearer network, so as to reasonably utilize the existing network device and improve the service quality.
  • FIG. 1 is a flow chart of a method for dynamically selecting a service bearer network to improve voice quality according to the present invention.
  • the service bearer network is selected by using the present invention, which specifically includes:
  • Step 101 The media gateway presets a condition of the preferred service bearer network and the handover service bearer network.
  • Step 102 The media gateway monitors the service bearer quality of the preferred service bearer network in real time.
  • Step 103 When receiving the signaling message from the user side, the media gateway sends the signal to the signaling module by the network interface module.
  • Step 104 When determining that the signaling message is the first message in a call, the signaling module determines whether the service bearer quality of the monitored preferred service bearer network satisfies the condition of the handover service bearer network, and selects according to the judgment result.
  • a service bearer network is used to transmit services related to the signaling message.
  • the first message in the one of the calls such as: an IAM (Initial Address Message) message in ISUP signaling, a SETUP message in Q.931 signaling, and the like.
  • IAM Intelligent Address Message
  • the media gateway presets a preferred service bearer network and a condition for switching the service bearer network, including:
  • Step 1011 Pre-set one of the IP network and the PSTN as the preferred service bearer network.
  • the IP network can be set as a high-priority network
  • the PSTN can be set as a low-priority network.
  • Step 1012 Configure specific parameters of the service bearer quality, and preset, when the condition of the specific parameter is met, the service bearer network switches from the high priority network to the low priority network; for example, setting The handover reference condition is PSQM (Perceptual Speech Quality Measurement).
  • PSQM Personal Speech Quality Measurement
  • step 104 the following processing is further included:
  • the service bearer network selected according to the first message in the call is used instead of being reselected; the reason for this is that processing a call requires complete Signaling process. If the signaling messages in a signaling process are sent through different service bearer networks, the received signaling messages are incomplete or out of order at the end node, affecting normal calls.
  • step 104 the determining whether the service bearer quality of the preferred service bearer network meets the condition of the handover service bearer network, and selecting a service bearer network for transmitting the service related to the signaling message according to the judgment result, including :
  • Step 1041 When the result of the determination is that the current service bearer quality of the preferred service bearer network does not meet the condition of the handover service bearer network, the preset preferred service bearer network is selected to transmit the service related to the signaling message. ;
  • Step 1042 When the result of the determination is that the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, the low priority network is selected to transmit the service related to the signaling message.
  • the device for dynamically selecting a service bearer network to improve voice quality is disposed in a media gateway, and includes: a configuration module, a network monitoring module, a network interface module, and a signaling module;
  • a configuration module configured to preset a condition of a preferred service bearer network and a service bearer network
  • a network monitoring module configured to monitor a service bearer quality of the preferred service bearer network in real time
  • a network interface module configured to receive a message from the user side
  • the signaling module is configured to: when determining that the signaling message is the first message in a call, determining whether the service bearer quality of the monitored preferred service bearer network meets the handover service bearer network The condition of the network, according to the judgment result, selects a service bearer network for transmitting the service related to the signaling message.
  • the configuration module is configured to preset one of an IP network and a PSTN as a preferred service bearer network, and configure a specific parameter of the service bearer quality, and preset to meet the specific parameter.
  • the condition of the service bearer network is switched from the preferred service bearer network to the low priority network.
  • the signaling module is configured to: when it is determined that the signaling message is not the first message in a call, use a service bearer selected according to the first message in the call. Network, and no longer re-select.
  • the signaling module is configured to select the preset preference when the current service bearer quality of the preferred service bearer network does not reach the condition of the handover service bearer network.
  • the service bearer network is configured to transmit the service related to the signaling message; when the result of the judgment is that the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, the low priority network is selected for transmission and the Signaling message related services.
  • the device further includes a service control module, configured to receive a signaling message sent by the signaling module when the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, and perform the signaling message sent by the signaling module.
  • a service control module configured to receive a signaling message sent by the signaling module when the current service bearer quality of the preferred service bearer network has reached the condition of the handover service bearer network, and perform the signaling message sent by the signaling module.
  • the destination office direction of the information message is obtained, and the destination office direction is sent to the signaling module, and the signaling module constructs narrowband signaling according to the destination office direction, and sends the narrowband signaling through the low priority network.
  • the signaling module sends the narrowband signaling to the network interface module, and then the network interface module sends out through the PSTN.
  • FIG. 3 is a flowchart of an application example of the present invention. As shown in FIG. 3, the example includes: Step 301: Configure data required for selecting a service bearer network.
  • Step 302 the MG receives a signaling message, and the network interface module sends the received signaling message. To the signaling module.
  • Step 303 The signaling module is responsible for parsing the signaling message.
  • Step 304 The signaling module obtains current service bearer status information of the IP network by using the network monitoring module.
  • Step 305 The signaling module forwards the signaling message according to the current service bearer status information of the IP network.
  • step of configuring data required for selecting a service bearer network includes:
  • Step 3011 Configure a preferred service carrier network.
  • the configured preferred service network is an IP network.
  • Step 3012 Configure a condition for switching the service bearer network.
  • the configuration is based on
  • ITU-T ITU Telecommunication Standardization Sector
  • P.861 Objective quality measurement of telephone - band (300-3400 Hz ) speech codecs, speech band (300-3 4 00Hz) speech codec Objective quality measurement
  • step of the signaling module being responsible for parsing the signaling message includes:
  • Step 3031 Determine whether the signaling message is the first message in a call.
  • the signaling message is the first message in a call (such as an IAM message in ISUP signaling, in Q.931 signaling). If the SETUP message is the same, the process proceeds to step 304, where the current service bearer status information of the IP network is obtained;
  • Step 3032 When the signaling message is not the first message in a call, the signaling message is sent from the previously selected network.
  • step of the signaling module forwarding the signaling message according to the current service bearer status information of the IP network includes:
  • Steps 3051 ⁇ 3052 determining whether the PSQM is 1.8. If the PSQM ⁇ 1.8 is learned from the network monitoring module, the signaling module will pass the corresponding adaptation protocol in the IP network (such as M3UA, IUA, etc.). Sending the signaling message over the IP network;
  • Step 3053 if the PSQM > 1.8 is learned from the network monitoring module, the signaling module sends the signaling message to the service control module, and the service control module analyzes the number in the signaling message to obtain the destination office direction of the signaling message, and The destination office is sent to the signaling module;
  • Step 3054 The signaling module constructs narrowband signaling according to the destination office direction, and sends the narrowband signaling through the PSTN. Specifically, the signaling module sends the narrowband signaling to the network interface module, and then the network interface module sends the packet through the PSTN.

Abstract

本发明公开了一种动态选择业务承载网络的方法及装置,所述方法包括:预设优选业务承载网络及切换业务承载网络的条件;实时监测所述优选业务承载网络的业务承载质量;媒体网关收到来自用户侧的信令消息;当判断所述信令消息是一个呼叫中的第一个消息时,判断监测到的优选业务承载网络的业务承载质量是否满足切换业务承载网络的条件,根据判断结果,选择一个业务承载网络用于传输与所述信令消息相关的业务。本发明通过监测业务承载网络的业务承载质量,动态地选择业务承载网络,而不是单一地使用IP网络或者PSTN中的某一个网络,从而达到了提高业务质量以及业务成功率的目的。

Description

一种动态选择业务承载网络的方法及装置 技术领域
本发明涉及在 NGN ( Next Generation Network , 下一代网络)架构下的 MG ( Media Gateway, 媒体网关)设备上, 通过特定条件, 为呼叫动态选 择业务承载网络的方法及装置。 背景技术
PSTN ( Public Switched Telephone Network, 公共交换电话网) ^^于 TDM ( Time Division Multiplexing, 时分复用), 以电路交换为信息交换方 式, 以电话业务为主要业务的电信网。 PSTN同时也提供传真等部分简单的 数据业务。
NGN是以 SS ( Soft Switch, 软交换)为核心的, 能够提供包括语音、 数据、 视频和多媒体业务的基于分组技术的综合开放的网络架构。 从意义 上讲, NGN是 PTSN语音网络和基于 IP ( Internet Protocol, 网络互连协议 ) 的分组网络融合的产物, 它使得在新一代网络上语音、 视频、 数据等综合 业务成为了可能。 NGN能在目前的网络基础上提供包括话音、 数据、 多媒 体等多种服务, 还能把现在用于长途电话的低资费 IP电话引入本地市话, 大大降低本地通话费的成本和价格。
在 NGN架构下, MG收到来自用户侧的信令是通过 IP网络转发的, 但是如果遇到网络风暴、 网络拥塞或者网络设备故障, 将会导致呼叫质量 的下降乃至呼叫中断。 现有的 NGN架构下解决此类问题的手段包括 SS容 灾模式, ISUP ( Integrated Services Digital Network User Part, 综合业务数字 网用户部分) 自交换等,但是这些手段都是建立在 SS与 MG之间信令中断 的前提下, 如果 IP网络中拥塞很大, 已严重影响语音质量及呼叫, 但是信 令没有中断, 上述手段不会起作用。 同时尽管 NGN已经大规模商用, 但是 现网中, 还有大量的 PSTN设备, 更好地利用这些现有设备是需要考虑的。 发明内容
本发明所要解决的技术问题在于提供一种动态选择业务承载网络的方 法及装置, 扩展现有 NGN网关模型, 对于来自用户侧的信令除了在 IP网 络中转发之外, 还可以通过 PSTN转发。
为了解决上述技术问题, 本发明提供了一种动态选择业务承载网络以 提高语音质量的方法, 该方法包括:
预设优选业务承载网络及切换业务承载网络的条件;
实时监测所述优选业务承载网络的业务承载质量;
收到来自用户侧的信令消息;
当判断所述信令消息是一个呼叫中的第一个消息时, 判断监测到的优 选业务承载网络的业务承载质量是否满足切换业务承载网络的条件, 根据 判断结果, 选择一个业务承载网络用于传输与所述信令消息相关的业务。
进一步来说, 所述预设优选业务承载网络及切换业务承载网络的条件 的步骤, 包括:
将 IP网络和 PSTN二者之一预设为优选业务承载网络, 另外一个设为 低优先级网络;
配置业务承载质量的具体参数, 预设在满足该具体参数的条件时, 业 务承载网络从优选业务承载网络向低优先级网络切换。
进一步来说, 所述方法还包括:
当判断所述信令消息不是一个呼叫中的第一个消息时, 使用根据呼叫 中第一个消息选择好的网络, 而不再重新选择。
进一步来说, 所述判断监测到的优选业务承载网络的业务承载质量是 否满足切换业务承载网络的条件, 根据判断结果, 选择一个业务承载网络 用于传输与所述信令消息相关的业务, 包括:
当判断结果为优选业务承载网络的当前业务承载质量没有达到所述切 换业务承载网络的条件时, 选择所述预设的优选业务承载网络用于传输与 所述信令消息相关的业务。
进一步来说, 所述根据判断结果, 选择一个业务承载网络用于传输与 所述信令消息相关的业务的步骤还包括:
当判断结果为优选业务承载网络的当前业务承载质量已经达到切换业 务承载网络的条件时, 选择低优先级网络用于传输与所述信令消息相关的 业务。
为了解决上述技术问题, 本发明还提供了一种动态选择业务承载网络 以提高语音质量的装置, 设置于媒体网关, 该装置包括: 配置模块、 网络 监测模块、 网络接口模块及信令模块; 其中,
配置模块, 用于预设优选业务承载网络及切换业务承载网络的条件; 网络监测模块, 用于实时监测所述优选业务承载网络的业务承载质量; 网络接口模块, 用于接收来自用户侧的信令消息并转发给信令模块; 信令模块, 用于当判断所述信令消息是一个呼叫中的第一个消息时 , 判断监测到的优选业务承载网络的业务承载质量是否满足切换业务承载网 络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所述信令消 息相关的业务。
进一步来说, 所述配置模块, 用于将 IP网络和 PSTN二者之一预设为 优选业务承载网络, 另外一个设为低优先级网络; 配置业务承载质量的具 体参数, 预设在满足该具体参数的条件时, 业务承载网络从优选业务承载 网络向低优先级网络切换。
进一步来说, 所述信令模块, 用于当判断所述信令消息不是一个呼叫 中的第一个消息时, 使用根据呼叫中第一个消息选择好的网络, 而不再重 新选择。
进一步来说, 所述信令模块, 用于当判断结果为优选业务承载网络的 当前业务承载质量没有达到所述切换业务承载网络的条件时, 选择所述预 设的优选业务承载网络用于传输与所述信令消息相关的业务; 当判断结果 为优选业务承载网络的当前业务承载质量已经达到切换业务承载网络的条 件时, 选择低优先级网络用于传输与所述信令消息相关的业务。
所述装置还包括业务控制模块, 用于当优选业务承载网络的当前业 务承载质量已经达到切换业务承载网络的条件时, 接收信令模块发来的 信令消息, 并对信令消息中的号码进行分析,得到信息消息的目的局向, 并将该目的局向发送给信令模块;
信令模块, 还用于根据该目的局向构造窄带信令, 并将该窄带信令通 过低优先级网络发出。
与现有技术相比较, 本发明扩展了 MG上对于来自用户侧的信令转发 能力, 通过监测业务承载网络的业务承载质量, 动态地选择业务承载网络, 而不是单一地使用 IP网络或者 PSTN其中的某一个网络, 从而达到了提高 业务质量以及业务成功率的目的。 附图说明
图 1 为本发明实施例的动态选择业务承载网络以提高语音质量的方法 流程图。
图 2为本发明实施例的动态选择业务承载网络以提高语音质量的装置 结构图。
图 3 为本发明应用实例的动态选择业务承载网络以提高语音质量的方 法流程图。 具体实施方式
本发明的主要思想是, 在处理接入的呼叫消息时, 可以根据业务承载 网络的当前实际状况动态选择使用 PSTN呼出, 还是 IP网络呼出, 从而合 理利用现有网络设备, 提高业务质量。
下面结合附图和具体实施例对本发明进行更为详细的说明。
图 1为本发明的动态选择业务承载网络以提高语音质量的方法流程图。 如图 1所示, 利用本发明选择业务承载网络, 具体包括:
步骤 101 , 媒体网关预设优选业务承载网络及切换业务承载网络的条 件;
步骤 102, 媒体网关实时监测所述优选业务承载网络的业务承载质量; 步骤 103,媒体网关收到来自用户侧的信令消息时, 由网络接口模块送 往信令模块处理;
步骤 104, 信令模块当判断所述信令消息是一个呼叫中的第一个消息 时, 判断监测到的优选业务承载网络的业务承载质量是否满足切换业务承 载网络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所述信 令消息相关的业务。
所述一个呼叫中的第一个消息,如: ISUP信令中的 IAM ( Initial Address Message, 初始地址消息) 消息, Q.931信令中的 SETUP (建立) 消息等。
具体来说, 在步骤 101 中, 媒体网关预设优选业务承载网络及切换业 务承载网络的条件, 包括:
步骤 1011 , 将 IP网络和 PSTN二者之一预设为优选业务承载网络; 在实际应用中, 可以将 IP网络设为高优先级网络, 将 PSTN设为低优 先级网络;
步骤 1012 , 配置业务承载质量的具体参数, 预设在满足该具体参数的 条件时, 业务承载网络从高优先级网络向低优先级网络切换; 例如, 设置 切换参考条件为 PSQM ( Perceptual Speech Quality Measurement, 感知话音 质量测量)釆样,当 PSQM平均值 > 1.8时,需要切换业务承载网络到 PSTN。
步骤 104中, 还包括以下处理:
如果该信令消息不是一个呼叫中的第一个消息, 则使用根据呼叫中第 一个消息选择好的业务承载网络, 而不再重新选择; 之所以这样规定, 是 因为处理一个呼叫需要完整的信令流程, 而如果一个信令流程中的信令消 息通过不同的业务承载网络发送, 会导致在终节点处, 收到的信令消息不 完整或者时序错乱, 影响正常呼叫。
步骤 104 中, 所述判断监测到的优选业务承载网络的业务承载质量是 否满足切换业务承载网络的条件, 根据判断结果, 选择一个业务承载网络 用于传输与所述信令消息相关的业务, 包括:
步骤 1041 , 当判断结果为优选业务承载网络的当前业务承载质量没有 达到所述切换业务承载网络的条件时, 选择所述预设的优选业务承载网络 用于传输与所述信令消息相关的业务;
步骤 1042 , 当判断结果为优选业务承载网络的当前业务承载质量已经 达到切换业务承载网络的条件时, 选择低优先级网络用于传输与所述信令 消息相关的业务。
如图 2所示, 本发明的动态选择业务承载网络以提高语音质量的装置 设置于媒体网关中, 且包含: 配置模块、 网络监测模块、 网络接口模块、 信令模块; 其中,
配置模块, 用于预设优选业务承载网络及切换业务承载网络的条件; 网络监测模块, 用于实时监测所述优选业务承载网络的业务承载质量; 网络接口模块, 用于接收来自用户侧的信令消息并转发给信令模块; 信令模块, 用于当判断所述信令消息是一个呼叫中的第一个消息时 , 判断监测到的优选业务承载网络的业务承载质量是否满足切换业务承载网 络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所述信令消 息相关的业务。
在本发明的一个优选实施例中,所述配置模块,用于将 IP网络和 PSTN 两者之一预设为优选业务承载网络; 并配置业务承载质量的具体参数, 预 设在满足该具体参数的条件时, 业务承载网络从优选业务承载网络向低优 先级网络切换。
在本发明的一个优选实施例中, 所述信令模块, 用于当判断到所述信 令消息不是一个呼叫中的第一个消息时, 使用根据呼叫中第一个消息选择 好的业务承载网络, 而不再重新选择。
在本发明的一个优选实施例中, 所述信令模块, 用于当判断结果为优 选业务承载网络的当前业务承载质量没有达到所述切换业务承载网络的条 件时, 选择所述预设的优选业务承载网络用于传输与所述信令消息相关的 业务; 当判断结果为优选业务承载网络的当前业务承载质量已经达到切换 业务承载网络的条件时, 选择低优先级网络用于传输与所述信令消息相关 的业务。
该装置还包括业务控制模块, 用于当优选业务承载网络的当前业务承 载质量已经达到切换业务承载网络的条件时, 接收信令模块发来的信令消 息, 并对信令消息中的号码进行分析, 得到信息消息的目的局向, 并将该 目的局向发送给信令模块, 信令模块根据该目的局向构造窄带信令, 并将 该窄带信令通过低优先级网络发出。 具体地, 信令模块将该窄带信令发送 到网络接口模块, 再由网络接口模块通过 PSTN发出。
下面通过具体应用中的实例对本发明技术方案进行示例性说明。
图 3是本发明一个应用实例的流程图, 如图 3所示, 该实例包括: 步骤 301 , 配置选择业务承载网络所需数据。
步骤 302 , MG收到一个信令消息, 网络接口模块将收到的信令消息送 往信令模块。
步骤 303 , 信令模块负责解析该信令消息。
步骤 304, 信令模块通过网络监测模块获取 IP网络当前的业务承载状 态信息。
步骤 305 , 信令模块根据 IP网络当前的业务承载状况信息进行信令消 息的转发。
进一步地, 配置选择业务承载网络所需数据的步骤包括:
步骤 3011 , 配置优选业务 载网络。 本实例中, 配置的优选业务^载 网络为 IP网络。
步骤 3012 , 配置切换业务承载网络的条件。 本实例中, 配置依据的是
ITU-T ( ITU Telecommunication Standardization Sector, 国际电信联盟远程 通信标准化组) P.861 ( Objective quality measurement of telephone -band ( 300-3400 Hz ) speech codecs, 话带 ( 300-3400Hz )语音编译码器的客观 质量测量), 当 PSQM平均值大于 1.8时, 需要切换业务承载网络到 PSTN。
进一步地, 信令模块负责解析该信令消息的步骤包括:
步骤 3031 , 判断信令消息是否是一个呼叫中的第一个消息, 本实例中 该信令消息是一个呼叫中的第一个消息(如 ISUP信令中的 IAM消息, Q.931 信令中的 SETUP消息等)时, 则进入步骤 304, 获取 IP网络当前的业务承 载状况信息;
步骤 3032 , 当该信令消息不是一个呼叫中的第一个消息时, 将该信令 消息从先前选择的网络中发出。
进一步地, 信令模块根据 IP网络当前的业务承载状况信息进行信令消 息的转发的步骤包括:
步骤 3051~3052 , 判断 PSQM 是否 1.8 , 如果从网络监测模块获知 PSQM < 1.8,信令模块将通过 IP网络中相应适配协议(如 M3UA, IUA等), 将该信令消息通过 IP网络发出;
步骤 3053 , 如果从网络监测模块获知 PSQM > 1.8, 信令模块将信令消 息送到业务控制模块, 业务控制模块对信令消息中的号码进行分析, 得到 信令消息的目的局向, 并将该目的局向发送给信令模块;
步骤 3054, 信令模块根据该目的局向构造窄带信令, 并将该窄带信令 通过 PSTN发出。 具体的是, 信令模块将该窄带信令发送到网络接口模块, 再由网络接口模块通过 PSTN发出。
当然, 本发明可有多种实施例, 在不背离本发明精神及其实质的情况 这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。

Claims

权利要求书
1、 一种动态选择业务承载网络的方法, 其特征在于, 该方法包括: 预设优选业务承载网络及切换业务承载网络的条件;
实时监测所述优选业务承载网络的业务承载质量;
收到来自用户侧的信令消息;
当判断所述信令消息是一个呼叫中的第一个消息时, 判断监测到的 优选业务承载网络的业务承载质量是否满足切换业务承载网络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所述信令消息相关的 业务。
2、如权利要求 1所述的动态选择业务承载网络的方法,其特征在于, 所述预设优选业务承载网络及切换业务承载网络的条件的步骤, 包括: 将网络互连协议 IP网络和公共交换电话网 PSTN二者之一预设为优 选业务承载网络, 另外一个设为低优先级网络;
配置业务承载质量的具体参数, 预设在满足该具体参数的条件时, 业务承载网络从优选业务承载网络向低优先级网络切换。
3、如权利要求 1所述的动态选择业务承载网络的方法,其特征在于, 所述方法还包括:
当判断所述信令消息不是一个呼叫中的第一个消息时, 使用根据呼 叫中第一个消息选择好的网络。
4、如权利要求 1所述的动态选择业务承载网络的方法,其特征在于, 所述判断监测到的优选业务承载网络的业务承载质量是否满足切换业务 承载网络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所 述信令消息相关的业务, 包括:
当判断结果为优选业务承载网络的当前业务承载质量没有达到所述 切换业务承载网络的条件时, 选择所述预设的优选业务承载网络用于传 输与所述信令消息相关的业务。
5、如权利要求 4所述的动态选择业务承载网络的方法,其特征在于, 所述根据判断结果, 选择一个业务承载网络用于传输与所述信令消息相 关的业务的步骤还包括:
当判断结果为优选业务承载网络的当前业务承载质量已经达到切换 业务承载网络的条件时, 选择低优先级网络用于传输与所述信令消息相 关的业务。
6、 一种动态选择业务承载网络的装置, 设置于媒体网关, 其特征在 于, 该装置包括: 配置模块、 网络监测模块、 网络接口模块及信令模块; 其中,
配置模块,用于预设优选业务承载网络及切换业务承载网络的条件; 网络监测模块, 用于实时监测所述优选业务承载网络的业务承载质 量;
网络接口模块,用于接收来自用户侧的信令消息并转发给信令模块; 信令模块,用于当判断所述信令消息是一个呼叫中的第一个消息时, 判断监测到的优选业务承载网络的业务承载质量是否满足切换业务承载 网络的条件, 根据判断结果, 选择一个业务承载网络用于传输与所述信 令消息相关的业务。
7、如权利要求 6所述的动态选择业务承载网络的装置,其特征在于, 所述配置模块,用于将 IP网络和 PSTN二者之一预设为优选业务承 载网络, 另外一个设为低优先级网络; 配置业务承载质量的具体参数, 预设在满足该具体参数的条件时, 业务承载网络从优选业务承载网络向 低优先级网络切换。
8、如权利要求 6所述的动态选择业务承载网络的装置,其特征在于, 所述信令模块, 用于当判断所述信令消息不是一个呼叫中的第一个 消息时, 使用根据呼叫中第一个消息选择好的网络。
9、如权利要求 6所述的动态选择业务承载网络的装置,其特征在于, 所述信令模块, 用于当判断结果为优选业务承载网络的当前业务承 载质量没有达到所述切换业务承载网络的条件时, 选择所述预设的优选 业务承载网络用于传输与所述信令消息相关的业务; 当判断结果为优选 业务承载网络的当前业务承载质量已经达到切换业务承载网络的条件 时, 选择低优先级网络用于传输与所述信令消息相关的业务。
10、 根据权利要求 9所述的动态选择业务承载网络的装置, 其特征 在于, 所述装置还包括业务控制模块, 用于当优选业务承载网络的当前 业务承载质量已经达到切换业务承载网络的条件时, 接收信令模块发来 的信令消息, 并对信令消息中的号码进行分析, 得到信息消息的目的局 向, 并将该目的局向发送给信令模块;
信令模块, 还用于根据该目的局向构造窄带信令, 并将该窄带信令 通过低优先级网络发出。
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